<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>测试页面</title>
  <link rel="stylesheet" href="bootstrap.min.css">
  <link rel="stylesheet" href="index.css">
</head>

<body>
  <div class="myclass text-center">
    测试
  </div>
</body>

<script src="jquery.min.js"></script>
<script src="bootstrap.min.js"></script>
<script src="index.js"></script>

</html>